On January 31st, FreeBSD 6.3 will reach its End of Life and will no longer be
supported by the FreeBSD Security Team. Users of this release are strongly
encouraged to upgrade to a newer release before that date -- more conservative
users will probably wish to upgrade to FreeBSD 6.4 or FreeBSD 7.1 (which are
both extended-support branches), while others will probably wish to upgrade to
FreeBSD 7.2 or FreeBSD 8.0.

The freebsd-update(8) utility can be used to upgrade i386 and amd64 systems
from 6.3-RELEASE (or 6.3-RELEASE-pX for some X) to 6.4-RELEASE using binary
updates (i.e., without compiling from source) as described in the 6.4-RELEASE
announcement; given an adequate internet connection, this process usually takes
15 minutes or less.